ALM_ME_ORDER_OPERATION_ADDON is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Order Operation Additional Data" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_ALM_ME_ORDER_OPERATION_ADDON TYPE ALM_ME_ORDER_OPERATION_ADDON.
The ALM_ME_ORDER_OPERATION_ADDON table consists of various fields, each holding specific information or linking keys about Order Operation Additional Data data available in SAP. These include ACTIVITY (Operation/Activity Number), SUB_ACTIVITY (Suboperation), ROUTING_NO (Routing number of operations in the order), ROUTING_COUNTER (General counter for order)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .